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Add notes about getting a serial console working

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Adam Nielsen 2021-07-04 17:50:57 +10:00
parent 4f41868116
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Raspberry_Pi.md
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@ -260,6 +260,12 @@ To use the GPIO/SPI pins as a regular non-root user (in group `tty`), add the fo
SUBSYSTEM=="gpio", KERNEL=="gpiochip*", ACTION=="add", PROGRAM="/bin/sh -c 'chown root:tty /sys/class/gpio/export /sys/class/gpio/unexport ; chmod 220 /sys/class/gpio/export /sys/class/gpio/unexport'"
SUBSYSTEM=="gpio", KERNEL=="gpio*", ACTION=="add", PROGRAM="/bin/sh -c 'chown root:tty /sys%p/active_low /sys%p/direction /sys%p/edge /sys%p/value ; chmod 660 /sys%p/active_low /sys%p/direction /sys%p/edge /sys%p/value'"
### Serial Console
Adding `console=ttyAMA0,115200` to the kernel command line will enable it from
the kernel's perspective. On some models, the serial UART conflicts with the
Bluetooth UART, so disabling Bluetooth with `dtoverlay=disable-bt` in
`config.txt` may be required in order to get the serial console working.
## See Also